Thermal effect of radiation on dye-doped polystyrene particles covered with a silver layer

The heating of laser-irradiated two-layer spherical particles is analyzed theoretically and numerically by solution of the heat conduction equation. The internal heat source function and temperature distributions are presented for particles composed of a dye-doped polystyrene core and a deposited silver shell. It is shown that the internal heat source function distributions inside such particles substantially depend on core radii and shell thicknesses. Therefore the same parameters also strongly influence the heating times of such particles. In particular, the increase in thickness of the surface silver layer can result both in reduction of the heating time of two-layer particles and in strong growth of the heating time.